9. Know your pet's limits
Unless they're acclimated to cold weather, cats should stay inside. But when a dog's gotta go, he's gotta go outside. Dogs with heavy coats can handle cold weather; single-coated dogs like poodles and terriers might need a jacket or sweater just to dash out to take care of business. Either way, your dog will usually tell you when enough is enough, by shivering, tugging you back toward home, or doing what the LeBels's Lab, Hopkins, does: "When he starts doing a little dance, lifting his paws, it's too cold," says Michael.